SAPPHO 8 E, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(457319) SAPPHO 8 E
From Year=1948 To Year=1997
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 48 65 109 191 369 506 652 662 546 325 106 49 3628
40 S 48 113 222 413 783 1289 1940 2602 3148 3474 3580 3628 3628
45 M 9 16 32 78 221 356 497 507 396 180 30 9 2332
45 S 9 25 57 135 357 713 1209 1716 2112 2293 2323 2332 2332
50 M 1 2 5 24 107 210 342 352 249 73 4 1 1368
50 S 1 2 7 32 139 349 691 1043 1291 1364 1368 1368 1368
55 M 0 0 0 5 43 95 193 201 122 20 0 0 679
55 S 0 0 0 5 49 144 337 538 659 679 679 679 679
60 M 0 0 0 0 13 35 83 85 45 2 0 0 264
60 S 0 0 0 0 14 49 132 217 262 264 264 264 264
Corn Growing Degree Days
50 M 7 17 48 88 190 267 370 380 304 146 21 6 1843
50 S 7 24 71 160 350 617 987 1367 1671 1817 1838 1843 1843
M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
Table updated on Jul 28, 2006
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu